Truck-scoop.



E. A. HENSAL.

TRUCK SCOOP.

APPLICATION FILED AUG.8. 1917 Patented Mar. 11, 1919.

2 SHEETS-SHEET ca. Pnumunm. WASNINDYHN. n. c.

E A. HENSAL.

v TRUCK SCOOP. APPLICATION FILED AUG-8. 1911,

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TRUCK-SCOOP.

To all whom it may concern:

Be it known that I, ELMER A. HENSAL, a citizen of the United States, residing in Panora, county of Guthrie, and State of Iowa, have invented a new and useful Improvement in Truck-Scoops, of which the following is a specification.

The object of this invention is to provide an improved construction for a multipleskid road grading and excavating machine.

A further object (if this invention is to provide improved means for pivotally mounting skips on a grader frame, permitting vertical movement of said skips when not under strain. of taking on a load.

A further object of this invention is to provide improved means for raising the skips preliminary to the dumping operation.

A further object. of this invention is to provide improved means for adjusting the inclination of the skips and maintaining such adjustment irrespective of the vertical adjustment thereof. I

A further object of this invention is to provide independent means for dumping the skips. I

My invention consists in the construction, arrangement and combination of elements hereinafter set forth, pointed out in my claims and illustrated bythe accompanying drawing, in which 5 Figure 1 is a plan of my improved machine. Fig. 2 is a side elevation of the same. Fig. 3 is a front elevation of the truck and frame, the latter being partly in section. Fig. 4 is a detail,elevation,-partly in section, showing means for elevating the skip and portions of the means for dumping the same. Fig. 5is an elevation, on an enlarged scale, of oneof the crank shafts and its swivel members employed for adjusting the elevation of thelskips; Figs. 6 and 7 are detail elevations, at right angles toone another, of the removable crank employed for operating the dumping winches. I

In the construction of the machine as shown the numeral 10 designates generally a main frame which is horizontally arranged and preferably is constructed of channel beams suitably secured together. The frame 10is supported at its rear end by relatively large ground wheels 11 and at its forward end by relatively small supporting axle 13 adapted for oscillation to steer the device in a common manner. A plurality of and. steering wheels 12 pivoted on a forward Specification of Letters Patent. Patented Mar. 11, 1919. Application filed August 8, 1917. Serial No. 185,178. I

skips of any common form, in this instance four in number and designated by the numerals 14, 15, 16, 17, are provided and are swung from the frame 10 and arrangedone aheadv of the other thereon. Each skip preferably is provided with a removable cutting blade 18 at its forward margin, and withspaced handles 19, 2O projecting rearwardly from its rear side. For swinging the skips 14, 15, 16, 17 from the frame 10 I prefer to employ brackets 21, 22, 23, 24 arranged in" pairs transversely of and depending fromjthe frame 10, each pair of brackets being adapted to support a skip between them. Intermediate of its ends each skip is provided with trunnions 25 engageable in curved slots 26 in the brackets, said slots being approximately vertical in their upper or forward ends and curving rearwardly at their lower ends as shown in Fig. 2. The trunnions. 25 preferably comprise bolts. extended through sleeves 27 slidable in the slots 26 and also adapted for rotary oscillation therein, said bolts being extended through the side of the skip and secured by nuts 28. Brackets 29, 30, 31, 32

. are mounted-on and rise from the frame 10, sald brackets being arranged in palrs transversely of the frame and located substantially above the brackets 21, 22, 23, 24 respectively. Winch shafts 33, 34, 35, 36 are arranged transversely of the frame and are journaled for rotation respectively in the pairs of brackets 29, 30, 31, 32. Each winch shaft 33, 34, 35, 36 is provided, at either end or both, with crank handles 37 or other means for manually rotating the shafts. Each winch shaft 33, 34, 35, 36 is provided near its ends, and preferably inside the bearwith drums or winches 38, 39. Chains ings , are fixed at their upper, ends 40, or cables,

, to and adapted to be wound on the respective drums 38 and 39, extend downwardly and "have their lower ends secured to the sleeves 27 of the trunnions, between the supporting brackets and sides of the skips. Thus means is provided for adjusting the vertical elevation of ,the skips independently, by rotating the shafts 33, 34, 35, 36 and winding or unwinding the chains -40 relative to the drums, the trunnions 25 traveling through the slots 26 in such opera- .tion.

is provided at each end with a removable hand lever for manually oscillating it. Swivel rings 46, 47 are pivoted to and depend from each of the crank shafts and are spaced apart and adapted to be engaged by the handles 19, 20 of the respective skips. The handles 19, 2O normally engage loosely in the swivel rings 46, 47, except during the operation of dumping the skips, and by such engagement determine the elevation of the rear end of the skips. When the crank shafts 41, 42, 43, 44 are oscillated, independently, the elevation of the swivel rings 46, 47, on the crank portions of said shafts, is altered, thus altering the elevation of the rear end of the skips and consequently adjusting the inclination of the skips relative to the horizontal. This adjustment may be made for each skip irrespective of the position of said skip in its supporting brackets, as determined by the winch mechanism above described, as the crank portions of the crank shafts have a range of movement of approximately one hundred eighty degrees in such operation, namely from a vertical depending to a vertical upstanding position through an are described toward the skip which it controls, the rings 46, 47 swiveling on said shafts and always maintaining a substantially dependent posit-ion therefrom.

Winch shafts 48, 49, 50, 51 are arranged transversely and journaled for rotation in the frame 10, one forwardly of each of the skips 14, 15, 16, 17. As shown the winch shafts 48, 49, 50, 51 are journaled in bearings carried by the forward sides of the respective brackets 29, 30, 31, '32. A draft device 52 is fixed at one end to each of the winch shafts 48, 49, 50, 51 and is adapted to be wound thereon, and fixed at their opposite ends to rear portions of the respective skips 14, 15, 16, 17. The winch shafts 48, 49, 50, 51 are squared at one end, and a removable crank 53 is provided and adapted to engage such squared ends for manually rotating said shafts.

In practical use the skips 14, 15, 16, 17 are filled successively, the inclination being determined by manual adjustment of the crank shafts 41, 42, 43, 44 during such filling operation, as above set fortl. After each skip is filled it may be elevated by operation of its winch shaft 33, 84, 35, 36, and held in such elevated position by any suitable means, such as ratchet and pawl devices 54 to prevent rotation of said shafts. In the filling operation the trunnions of the skips rest in the bottoms and at the rear ends of the curved slots 26, in positions of stable equilibrium not affected by the strain of forcing the blades 18 through the earth. W hen all of the skips are filled and elevated the truck may be transported to any suitable place of deposit of the earth, the forward axle preferably having a tongue 55 or other suitable draft device through which tractive power may be applied from a tractor or the like for moving the truck both to fill the skips and to transport the load. When at the desired place of deposit the winch shafts 48, 49, 50, 51 are operated successively to wind the chains 52 thereon, thus elevating the rear ends of the skips and overturning said skips to the end of depositing their loads. In this operation the handles 19, 90 slip from the swivel rings 46, 4'7 and permit overturning of the skips, and are reen 'aged in said rings in any suitable manner when the skips are returned to normal posit-ions.

This nachine provides convenient means for moving large quantities of earth rapidly and with the assistance of a minimum number of laborers.

I do not desire to be understood as limiting myself to the precise construction and arrangement shown and described, as various modifications may be employed without departing from the spirit of my invention.

I claim as my invention 1. In a machine of the classdescribed, a truck frame, brackets arranged in transverse pairs spaced longitudinally of said frame, a skip mounted between each pair of brackets, said brackets being formed with vertical slots curved rearwardly at their lower ends, said skips being formed with trunnions pivoted in and also vertically adjustable of said slots, a crank shaft journaled in the frame behind each of said skips and formed with swivel rings, handles on and projecting rearwardly from said skips and adapted to engage loosely within said swivel rings, whereby the inclination of the skips may be separately adjusted, and means for adjusting said skips vertically by movement of said trunnions through said slots.

2. In a machine of the class described, a support, a skip mounted for oscillation and for vertical adjustment insaid support, said skip being formed with rearwardly projecting handles, a crank shaft journaled in said support and provided with swiveled rings adapted to loosely receive said handles, and means for adjusting the elevation of said skip, said crank shaft being adapted for oscillation to adjust the inclination of the skip irrespective of its vertical elevation.

ELMEE A. HENSAIJ.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, 5. 

